Combined heat and power production based on renewable aluminium-water reaction

Haller, Michel Y.; Amstad, Dominik; Dudită, Mihaela; Englert, Alexander; Häberle, Andreas

doi:10.1016/j.renene.2021.04.104

Cited by 31 publications

(14 citation statements)

References 54 publications

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“…6 Haller et al reported aluminum as a renewable fuel for combined heat and power production with an efficiency of more than 90% and 400 W of energy turnover. 8 Similarly, Meroueh et. al investigated a liquid-metal-activated aluminum doped with elements like magnesium (Mg), silicon (Si), and both.…”

Section: Introductionmentioning

confidence: 94%

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Hydrothermal Synthesis of Non-noble Hybrid Cu₂S Decorated Nickel Foam and Its Enhanced Electrocatalytic Activity for Direct Aluminum Fuel Cell Application

Durai

Badhulika

2022

ACS Appl. Energy Mater.

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Recycling of aluminum metal from scrap materials demands a high processing temperature, which releases several toxic gases to the environment. In contrast, aluminum metal is known as the cleanest and cheapest source for hydrogen production because of its 3 + oxidation state and spontaneous exothermic reaction with water molecules. In this work, we report the hydrothermal synthesis of hybrid Cu 2 S decorated on nickel foam (NF) for direct aluminum fuel cell application. The hybrid structure of the Cu 2 S nanoflake-and nanosphere-based catalyst distributed on the three-dimensional (3D) skeletal NF is revealed via detailed structural analysis. The Cu 2 S/NF-8 catalyst electrode exhibits a maximum mass activity of 106.7 mA/mg at an overpotential of 0.8 V (vs Hg/HgO) for a 40 mg Al source. The high mass activity of the optimized Cu 2 S/NF-8 catalyst electrode is attributed to the hybrid Cu 2 S structure, which facilitates improved electrocatalytic activity via its point defects and metallic edges. Likewise, the high electrical conductivity, chemical stability, and rapid charge transfer at the electrode with a short diffusion path are because of the arrangements of the hybrid Cu 2 S on the NF substrate. The stability and real-time performance of the Cu 2 S/NF-8 catalyst electrode is successfully studied via chronoamperometry in the presence of an Al ball and a scrap aluminum source. The electrode exhibits a capacity retention of ∼60% (for 7000 s; Al ball) and ∼35% (for 100000 s; scrap Al). This proves the Cu 2 S/NF-8 catalyst electrode as a promising platform for aluminum source-based fuel cell applications.

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Section: Introductionmentioning

confidence: 94%

“…Haller et al reported aluminum as a renewable fuel for combined heat and power production with an efficiency of more than 90% and 400 W of energy turnover . Similarly, Meroueh et.…”

Section: Introductionmentioning

confidence: 98%

Hydrothermal Synthesis of Non-noble Hybrid Cu₂S Decorated Nickel Foam and Its Enhanced Electrocatalytic Activity for Direct Aluminum Fuel Cell Application

Durai

Badhulika

2022

ACS Appl. Energy Mater.

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“…[ 27 ] So far, besides use of metal energy carriers in batteries, slurry fuel mixtures, or as additive in propellants, several concepts have been developed which are employing pure metals as fuels in combustion systems or as anode material in secondary battery applications (i.e., aluminum‐air batteries, magnesium batteries, etc.). [ 28–32 ] Among proposed concepts, designs using metals as electro‐fuel (produced through power‐to‐metal (PtM) similar to PtX processes) mainly address the technical aspects for utilizing different metals for generating heat, electricity, and H 2 . [ 28,29,33,34 ] Furthermore, conducted technical investigations imply high theoretical cycle efficiencies that makes metals appealing for further consideration.…”

Section: Introductionmentioning

confidence: 99%

“…[ 28–32 ] Among proposed concepts, designs using metals as electro‐fuel (produced through power‐to‐metal (PtM) similar to PtX processes) mainly address the technical aspects for utilizing different metals for generating heat, electricity, and H 2 . [ 28,29,33,34 ] Furthermore, conducted technical investigations imply high theoretical cycle efficiencies that makes metals appealing for further consideration. [ 21,35–38 ] Surprisingly, the economics of such conversion concepts have not been assessed in detail to provide insights about the economic feasibility and enable a comparison with other PtX technologies.…”

Section: Introductionmentioning

confidence: 99%

Hybrid Energy Storage and Hydrogen Supply Based on Aluminum—a Multiservice Case for Electric Mobility and Energy Storage Services

Ersoy

Baumann

Barelli

et al. 2022

Adv Materials Technologies

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The realization of a fully decarbonized mobility and energy system requires the availability of carbon‐free electricity and fuels which can be ensured only by cost‐efficient and sustainable energy storage technologies. In line with this demand, a techno‐economic evaluation of aluminum as a cross‐sectoral renewable energy carrier is conducted. The assessment, based on a newly developed process, involves the wet combustion of Aluminum at 700 °C resulting in heat and hydrogen (H2) generation. The designed conversion plant enables the contemporaneous generation of electricity and on demand H2 (up to 4 MW and 46.8 kg h–1) with round‐trip efficiencies as high as 40.7% and full recycling of the Al2O3 waste. This study, assuming the carbon‐free production of Al and three different energy cost scenarios, proves the feasibility of the e‐fueling station business case. The overall energy conversion including fuel production (power‐to‐Al), utilization (Al‐to‐power and Al‐to‐H2), and recycling requires a capital investment of 5200 € per kW installed power without additional primary material demand. Hence, the estimated power‐to‐X cost for the Al‐based H2 is estimated in the range of 4.2–9.6 € kg–1 H2, while wind and solar power based green H2 production cost varies from 6.5 to 12.1 € kg–1 H2.

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“…To remove the surface oxide film and promote Al/H 2 O reactions, many methods have been adopted to activate Al. One is dissolving Al by acidic or alkaline solution [30][31][32][33], but acidic or alkaline solutions are corrosive and can cause apparatus corrosion. Another method is alloying Al powders with metal additives by mechanical ball milling [34][35][36][37][38], but this method has a long mechanical ball milling time and high cost.…”

Section: Introductionmentioning

confidence: 99%

Enhanced Hydrogen Generation Performance of Al-Rich Alloys by a Melting-Mechanical Crushing-Ball Milling Method

et al. 2021

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The main problem for the application of hydrogen generated via hydrolysis of metal alloys is the low hydrogen generation rate (HGR). In this paper, active Al alloys were prepared using a new coupled method-melting-mechanical crushing-mechanical ball milling method to enhance the HGR at room temperature. This method contains three steps, including the melting of Al, Ga, In, and Sn ingots with low melting alloy blocks and casting into plates, then crushing alloy plate into powders and ball milling with chloride salts such as NiCl2 and CoCl2 were added during the ball milling process. The microstructure and phase compositions of Al alloys and reaction products were investigated via X-ray diffraction and scanning electron microscopy with energy dispersed X-ray spectroscopy. The low-melting-point Ga-In -Sn (GIS) phases contain a large amount of Al can act as a transmission medium for Al, which improves the diffusion of Al to Al/H2O reaction sites. Finer GIS phases after ball milling can further enhance the diffusion of Al and thus enhance the activity of Al alloy. The hydrogen generation performance through hydrolysis of water with Al at room temperature was investigated. The results show that the H2 generation performance of the Al-low-melting point alloy composite powder is significantly higher than the results reported to date. The highest H2 generation rate and H2 conversion efficiency can reach 5337 mL·min−1·g−1 for the hydrolysis of water with 1 g active alloy.

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Combined heat and power production based on renewable aluminium-water reaction

Cited by 31 publications

References 54 publications

Hydrothermal Synthesis of Non-noble Hybrid Cu₂S Decorated Nickel Foam and Its Enhanced Electrocatalytic Activity for Direct Aluminum Fuel Cell Application

Hydrothermal Synthesis of Non-noble Hybrid Cu₂S Decorated Nickel Foam and Its Enhanced Electrocatalytic Activity for Direct Aluminum Fuel Cell Application

Hybrid Energy Storage and Hydrogen Supply Based on Aluminum—a Multiservice Case for Electric Mobility and Energy Storage Services

Enhanced Hydrogen Generation Performance of Al-Rich Alloys by a Melting-Mechanical Crushing-Ball Milling Method

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Combined heat and power production based on renewable aluminium-water reaction

Cited by 31 publications

References 54 publications

Hydrothermal Synthesis of Non-noble Hybrid Cu2S Decorated Nickel Foam and Its Enhanced Electrocatalytic Activity for Direct Aluminum Fuel Cell Application

Hydrothermal Synthesis of Non-noble Hybrid Cu2S Decorated Nickel Foam and Its Enhanced Electrocatalytic Activity for Direct Aluminum Fuel Cell Application

Hybrid Energy Storage and Hydrogen Supply Based on Aluminum—a Multiservice Case for Electric Mobility and Energy Storage Services

Enhanced Hydrogen Generation Performance of Al-Rich Alloys by a Melting-Mechanical Crushing-Ball Milling Method

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Hydrothermal Synthesis of Non-noble Hybrid Cu₂S Decorated Nickel Foam and Its Enhanced Electrocatalytic Activity for Direct Aluminum Fuel Cell Application

Hydrothermal Synthesis of Non-noble Hybrid Cu₂S Decorated Nickel Foam and Its Enhanced Electrocatalytic Activity for Direct Aluminum Fuel Cell Application